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Free DANB CDA Practice Questions

Original questions with explanations

These original DANB CDA practice questions are educational examples designed to exercise reasoning. They are not recalled exam items and do not imply access to live or confidential test content.

Question 1

Which component combination is required for DANB CDA certification?

  • A. AMP, ICE, and RHS only
  • B. GC and AMP only
  • C. RHS alone
  • D. GC, ICE, and RHS
Answer and explanation

D. GC, ICE, and RHS CDA uses General Chairside Assisting, Infection Control, and Radiation Health and Safety. NELDA uses AMP instead of GC.

Question 2

A candidate passed ICE and RHS. What should they verify before stating that they are CDA certified?

  • A. Only that two score reports exist
  • B. That they own a dental-assisting study guide
  • C. That the employer prefers the CDA title
  • D. That GC and all current CDA requirements are satisfied within DANB’s completion period
Answer and explanation

D. That GC and all current CDA requirements are satisfied within DANB’s completion period Component passes are steps toward certification; they do not alone establish completion of the full CDA credential.

Question 3

A dental material’s handling instruction differs from an old office note. What is the best action?

  • A. Check the current manufacturer instructions and applicable office protocol before use
  • B. Use the old note because it is familiar
  • C. Apply the same setting used for every material
  • D. Guess based on appearance
Answer and explanation

A. Check the current manufacturer instructions and applicable office protocol before use Handling is product-specific. Current instructions and appropriate professional oversight help avoid errors from outdated or overgeneralized habits.

Question 4

An imaging retake is being considered after a positioning error. What should happen first?

  • A. Identify the cause and plan a correction consistent with the authorized imaging protocol
  • B. Repeat the exposure with no adjustment
  • C. Increase exposure for every error
  • D. Take multiple extra images without a reason
Answer and explanation

A. Identify the cause and plan a correction consistent with the authorized imaging protocol A retake should address an identified problem and follow the authorized protocol. Repetition without correction creates avoidable exposure.

Question 5

A contaminated instrument has completed cleaning. What should the assistant avoid assuming?

  • A. That cleaning alone necessarily makes it sterile
  • B. That the next processing step depends on its use and instructions
  • C. That the processing workflow should be documented
  • D. That clean and contaminated areas should remain separated
Answer and explanation

A. That cleaning alone necessarily makes it sterile Cleaning removes soil but is distinct from disinfection and sterilization. The required subsequent process depends on the device and intended use.

Question 6

A patient reports a new health concern while being prepared for a procedure. What is the appropriate assistant response?

  • A. Ignore it because the chart was completed earlier
  • B. Promise that treatment will be safe without review
  • C. Document and promptly communicate the concern to the responsible clinician
  • D. Diagnose the condition independently
Answer and explanation

C. Document and promptly communicate the concern to the responsible clinician New information can affect the treatment plan. The assistant should communicate within role boundaries so the responsible clinician can assess it.

Question 7

Which action best reduces cross-contamination between clean supplies and a used treatment area?

  • A. Maintain the designated clean/contaminated workflow and appropriate hand and barrier practices
  • B. Store clean supplies on an untreated contaminated surface
  • C. Handle clean supplies with contaminated gloves
  • D. Assume a surface is clean because it looks dry
Answer and explanation

A. Maintain the designated clean/contaminated workflow and appropriate hand and barrier practices Contamination control relies on the workflow and protective practices, not appearance alone. Clean supplies should not be exposed to contaminated handling or surfaces.

Question 8

A GC outline states chairside dentistry is 50%. What does this mean?

  • A. Half of the GC component’s domain weighting, not half of the entire combined CDA test
  • B. Half of all CDA questions across every component
  • C. Half of the ICE component
  • D. A guaranteed raw passing percentage
Answer and explanation

A. Half of the GC component’s domain weighting, not half of the entire combined CDA test Component outlines have their own denominators. Using a GC weight for the combined test misallocates study time and misrepresents the blueprint.

Question 9

A national dental-assisting credential is earned. What must still be checked before performing an expanded function?

  • A. Only the study guide’s edition
  • B. Nothing, because every national credential grants every dental duty
  • C. Whether a coworker performed the duty once
  • D. The applicable state requirements, supervision rules, and any additional authorization
Answer and explanation

D. The applicable state requirements, supervision rules, and any additional authorization Certification and state scope-of-practice requirements are separate. A credential does not automatically authorize every task in every jurisdiction.

Question 10

Which final-review approach best supports preparation for a combined CDA appointment?

  • A. Mix practice across GC, ICE, and RHS while tracking weaknesses and pacing separately
  • B. Study only the strongest component
  • C. Memorize one small question set until every answer is familiar
  • D. Predict the result from how difficult practice feels
Answer and explanation

A. Mix practice across GC, ICE, and RHS while tracking weaknesses and pacing separately The combined appointment still covers distinct components. Separate error tracking helps reveal gaps hidden by an overall practice average.

How to Review Your Results

For every missed item, name the tested concept, explain why the correct option is best, and identify the clue that rules out each distractor. Then review the corresponding official content domain.

Official Sources

Related Resources

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